U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records

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State directory

Washington ZIP Codes

Complete postal directory, details, and geographic map for the State of Washington.

State	ZIP Code	City	County	Area Codes
WA	98948	Toppenish	Yakima County	`509`
WA	98950	Vantage	Kittitas County	`509`
WA	98951	Wapato	Yakima County	`509`
WA	98952	White Swan	Yakima County	`509`
WA	98953	Zillah	Yakima County	`509`
WA	99001	Airway Heights	Spokane County	`509`
WA	99003	Chattaroy	Spokane County	`509`
WA	99004	Cheney	Spokane County	`509`
WA	99005	Colbert	Spokane County	`509`
WA	99006	Deer Park	Spokane County	`509`

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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.